That Fender was just over 400. We were just fucking around in that video.. I actually drum and sing back up. It was a special occasion when we busted that out.

Chords are simple man, you should be able to do your A, E and Am as well as the chords you listed along with sus variations of most of them.

Practice this thing called CAGE.. where you go from the chords C to A to G to E and just keep doing it. One strum or two strums, or 5 strums, whatever, start slow and speed it up so you can do it in one strum without looking repeatedly. Once you get your E down you can do Am easily it's just a down a string. When you get those basics down pat move on to your F and B and so forth..